main() {
  int a = 10;
  print(a);

  double b = 10.12;
  print(b);

  //num is the supertype, int and double extend num.
  num c = 10;
  num d = 10.12;
  print(c);
  print(d);

  var nan = 0 / 0;
  print(nan); //NaN
}
//EOP
